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308438 7
Installation/Operation
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
D are instructed to relieve the pressure,
D stop spraying,
D check or service any of the system equipment,
D or install or clean the spray tip.
1. Lock the gun trigger safety.
2. Shut off the power to the pump. Open the bleed-
type master air valve (pneumatic pumps only).
3. Unlock the gun trigger safety.
4. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
5. Lock the gun trigger safety.
6. Open the fluid drain valve, having a container
ready to catch the drainage. Leave the drain valve
open until you are ready to spray again.
7. If you suspect that the spray tip or hose is com-
pletely clogged or that pressure has not been fully
relieved, very slowly loosen the tip guard retaining
nut or hose end coupling and relieve pressure
gradually. Clean the tip or hose obstruction.